Best debug bar plugins for WordPress
The most popular debug bar plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Query Monitor leads with 200K+ active installs, ahead of ElasticPress Debugging Add-On (800+) and Debug Bar Rewrite Rules (700+). All 33 plugins tagged “debug bar” are below, with figures from WordPress.org that update every day.
Installs aren’t everything: a recent release, a “Tested up to” that matches the current WordPress, and support threads that get resolved show a plugin is looked after. Open any plugin for its downloads, rank history and alternatives.
Research this niche or see all plugins.
Top 10 debug bar plugins
- 1.
Query MonitorThe most installed debug bar plugin, with 200K+ active installs. Rated 4.9 from 470 reviews, updated 1 week ago.
- 2.
ElasticPress Debugging Add-On800+ active installs. Only 2 reviews so far, updated 6 months ago.
- 3.
Debug Bar Rewrite Rules700+ active installs. Rated 5.0 from 5 reviews, last updated 2 years ago. Tested only up to WordPress 6.5.14.
- 4.
Black Bar500+ active installs. Rated 5.0 from 9 reviews, updated 5 months ago.
- 5.
Debug Bar Cron400+ active installs. Only 3 reviews so far, last updated 12 years ago.
- 6.
Debug Bar Actions and Filters Addon400+ active installs. Rated 4.5 from 8 reviews, last updated 4 years ago. Tested only up to WordPress 6.0.18.
- 7.
BugFu Console Debugger300+ active installs. Rated 4.8 from 17 reviews, last updated 3 years ago. Tested only up to WordPress 6.1.16.
- 8.
BlackBox Debug Bar80+ active installs. Rated 4.6 from 15 reviews, last updated 13 years ago. Tested only up to WordPress 3.5.2.
- 9.
Debug Bar Transients30+ active installs. Only 1 review so far, last updated 9 years ago. Tested only up to WordPress 4.7.39.
- 10.
Debug Bar Post Types30+ active installs. Only 1 review so far, last updated 8 years ago. Tested only up to WordPress 4.9.35.
All 33 plugins tagged “debug bar”
Query Monitor
Down in the last 7 days:1#243by John Blackbourn13 days ago
Query Monitor is the developer tools panel for WordPress and WooCommerce.
- Installs
- 200K+
- Rating
- 4.9(470)
- Downloads
- 16.8K/day
ElasticPress Debugging Add-On
Up in the last 7 days:50#7,291by 10up6 months ago
Extends the Query Monitor and Debug Bar plugins for ElasticPress queries.
- Installs
- 800+
- Rating
- 5.0(2)
- Downloads
- 5.8K/day
Debug Bar Rewrite Rules
Down in the last 7 days:44#7,930by Oleg Butuzov2 years ago
Debug Bar Rewrite Rules adds a new panel to Debug Bar that displays information about WordPress Rewrites Rules (if used).
- Installs
- 700+
- Rating
- 5.0(5)
- Downloads
- 22/day
Black Bar
Down in the last 7 days:36#8,959by Gemini Labs5 months ago
Black Bar is an unobtrusive Debug Bar for WordPress developers that attaches itself to the bottom of the browser window.
- Installs
- 500+
- Rating
- 5.0(9)
- Downloads
- 23/day
Debug Bar Cron
Down in the last 7 days:9#9,555by Zack Tollman13 years ago
Debug Bar Cron adds a new panel to Debug Bar that displays information about WP scheduled events.
- Installs
- 400+
- Rating
- 5.0(3)
- Downloads
- 11/day
Debug Bar Actions and Filters Addon
Down in the last 7 days:50#9,802by Subharanjan4 years ago
Displays all the hooks( Actions and Filters ) for the current request in Debug Bar panel.
- Installs
- 400+
- Rating
- 4.5(8)
- Downloads
- 31/day
BugFu Console Debugger
Down in the last 7 days:104#10,861by Federico Andrioli3 years ago
Log/Debug the PHP code in your Theme/Plugin with your Browser Console (no extension needed)
- Installs
- 300+
- Rating
- 4.8(17)
- Downloads
- 10/day
BlackBox Debug Bar
Down in the last 7 days:24#17,546by Greg Winiarski13 years ago
BlackBox is a plugin for plugin and theme developers. It collects and displays useful debug information (errors, executed queries, globals, profiler).
- Installs
- 80+
- Rating
- 4.6(15)
- Downloads
- 0/day
Debug Bar Transients
Down in the last 7 days:563#23,978by Dominik Schilling10 years ago
Debug Bar Transients adds a new panel to Debug Bar that displays information about WordPress transients.
- Installs
- 30+
- Rating
- 5.0(1)
- Downloads
- 9/day
Debug Bar Post Types
Down in the last 7 days:447#24,058by Juliette Reinders Folmer8 years ago
Debug Bar Post Types adds a new panel to the Debug Bar with detailed information about registered post types. Requires "Debug Bar" plugin.
- Installs
- 30+
- Rating
- 4.0(1)
- Downloads
- 12/day
Debug Bar Shortcodes
Down in the last 7 days:1,044#24,952by Juliette Reinders Folmer10 years ago
Debug Bar Shortcodes adds a new panel to the Debug Bar that displays the registered shortcodes for the current request.
- Installs
- 30+
- Rating
- 5.0(3)
- Downloads
- 0/day
Debug Bar Rewrite Rules
#25,117by Kerfred2 months ago
Displays the current rewrite rules for the site. Requires the debug bar plugin.
- Installs
- 30+
- Rating
- –
- Downloads
- 0/day
Debug Bar Remote Requests
Up in the last 7 days:939#27,208by Matthew Boynes12 years ago
An add-on for the Debug Bar plugin that will log and profile remote requests made through the HTTP API
- Installs
- 20+
- Rating
- 5.0(1)
- Downloads
- 12/day
Debug Bar Constants
#27,858by Juliette Reinders Folmer8 years ago
Debug Bar Constants adds three new panels to the Debug Bar that display the defined WP and PHP constants for the current request.
- Installs
- 20+
- Rating
- 5.0(1)
- Downloads
- 0/day
HPOS Status Indicator for WooCommerce
Down in the last 7 days:21#28,030by YMMV Plugins5 months ago
Adds a High Performance Order Storage (HPOS) status indicator to the admin bar that shows the status of HPOS on the site, perfect for debugging.
- Installs
- 20+
- Rating
- –
- Downloads
- 0/day
Debug Bar Localization
Down in the last 7 days:185#29,974by Juliette Reinders Folmer10 years ago
Debug Bar Localization adds a new panel to the Debug Bar which displays information on the locale for your install and the language files loaded.
- Installs
- 10+
- Rating
- 5.0(2)
- Downloads
- 0/day
Debug Bar Super Globals
Up in the last 7 days:412#30,115by horike14 years ago
Displays Super Global valiables for the current request.Like $_POST, $_GET, and $_COOKIE. Requires the debug bar plugin.
- Installs
- 10+
- Rating
- 5.0(2)
- Downloads
- 0/day
Debug Bar Taxonomies
Down in the last 7 days:2,271#33,945by Juliette Reinders Folmer8 years ago
Debug Bar Taxonomies adds a new panel to the Debug Bar with detailed information about registered taxonomies. Requires "Debug Bar" plugin.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day
Debug Bar Widgets
Down in the last 7 days:716#34,259by Chris Hardie2 years ago
Debug Bar Widgets adds a new panel to the Debug Bar that displays all registered widgets.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day
Debug Bar Plugin Activation
Up in the last 7 days:12,160#35,850by Juliette Reinders Folmer10 years ago
Debug Bar Plugin Activation adds a new panel to the Debug Bar which displays plugin (de-)activation and uninstall errors.
- Installs
- 10+
- Rating
- 5.0(2)
- Downloads
- 0/day
Debug Bar Query Count Alert
#36,039by Matthew Boynes12 years ago
A simple add-on for the Debug Bar plugin to replace the button text with the database query count and time.
- Installs
- 10+
- Rating
- 5.0(2)
- Downloads
- 1/day
Debug Bar
Up in the last 7 days:3,288#37,568by Jesper van Engelen12 years ago
Debug Bar extension that adds information about the sidebars and widgets on the current page. Integrates with Content Aware Sidebars plugin.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day
What Scripts Styles Debug Bar
#39,097by codewink11 years ago
A tiny plugin to display all enqueued scripts and style
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day
Debug Bar Roles and Capabilities
#39,837by Matthew Boynes12 years ago
A simple add-on for Debug Bar that tabulates all roles and capabilities
- Installs
- 10+
- Rating
- 5.0(1)
- Downloads
- 0/day
Debug Bar Post Meta
#41,062by Taylor Dewey14 years ago
Very simple extention to the debug bar to get a list of post meta for the current post
- Installs
- 10+
- Rating
- 5.0(2)
- Downloads
- 0/day
Debug Bar Toggle
Up in the last 7 days:5,346#41,980by Evan Solomon13 years ago
The Debug Bar plugin is great, but sometimes I want to turn it off for a short time. This plugin lets you do that with a keystroke (ctrl + d).
- Installs
- 10+
- Rating
- 5.0(1)
- Downloads
- 0/day
Debug Bar Cache Lookup
#46,534by Allan Collins10 years ago
Look up items in object cache.
- Installs
- 10+
- Rating
- 3.0(1)
- Downloads
- 0/day
Debug Bar Screen Info
Down in the last 7 days:7,781#47,119by bradvin10 years ago
Show screen info of the current admin page in a new tab within the debug bar
- Installs
- 10+
- Rating
- 5.0(1)
- Downloads
- 0/day
Debug Bar Query Tracer
#48,488by Chris M.15 years ago
A Debug Bar plugin that lets you trace what plugins are causing database queries.
- Installs
- 10+
- Rating
- 1.0(1)
- Downloads
- 11/day
Debug Bar for Sophi
#54,301by Jeffrey Paul4 years ago
Extends the Debug Bar plugin for the Sophi.io Site Automation service.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day
Dev Studio
Up in the last 7 days:4,159#63,775by SolidBunch5 years ago
Development environment for Wordpress developers
- Installs
- <10
- Rating
- 5.0(6)
- Downloads
- 0/day
Script Report
#69,622by sapayth7 months ago
Debug and audit JavaScript and CSS loading in WordPress. Analyze dependencies, detect issues, and improve performance on any page.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day